Motor for vehicles.



i Patented Apr. 22, 1919.

3 SHEETS-SHEET l.

I .-lllllll l l l S Y A y Wye/MQW F. A. SNYDER. Mook Foa VEHICLES. APPLICATION FILED SEPT. 5. I9.I8.

Patented Apr. 22j, 1919.

3 SHEETSV-SHEET 2.

WWU, IMM

wif/'eases F. A. SNYDER. MOTOR FUR VEHICLES. APPLICATION FILED SEPT. 5. IsIs.

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l To all whom it may concern: l

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moron ron ventenne.'

Leoncio.

Be it known that ll, FRANKA. Stirner, olf the city of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and useful. Improvement in Motors for Vehicles, of which the following is a full, clear'andexact description, refer-l encebeing, had tothe accompanying drawings, forming part, ot'this specilication, in. whichl Figure 1 is a side elevation of motors em- I b odying my invention; Fig. 2 is an end elep pulsion of vehicles, such as street cars, autovation of a modication; Fig. 3 is aside elevation of the same; Fig. 4 is a horizontalsectional view illustrating the inlet and'ex- 4haust valves; Fig. 5 is a vertical sectional view on line 5-,5v'of ig. 4 Figli is a vertl-A 4cal 'sectional view onthe 'ne 6-6 of F1g.

4; Fig. 7 is a plan -view of the modiiication and Fig. 8 is a vertical sectional view of the brake valve. f

- Like symbole er reference indieeee like parts where theyloccur.

My inventionv relates 'to4 an improvement in'a motor to provide power for the promobiles, bicycles, etc., and it consists indei vicesfor/storing and vutilizin .compressed y' 3, pivoted to the cranlrl shaft 4, which is air 'as 'power-.for the vehicle. will now d ef scribe my invention so thatothers skllled 1n the art may'employthe saine.`

lin Fig. 1 of the drawings llhave a .pneumatic motor,A having ir'our' cyl1nders,2,

which may be of any suitableconstruction, having pistons jconnected..with' piston rods fprovided' with 'asprocket wheel "5 through the pneumatic, motor is ages 'engine'having a crank and shaftcasiii 8-8, which en e. may ll construction an gty c, the powershaitt 9 of o which is connected a;. crank llfwiththe Efpiston rod 11 of anpair compressor 12,which f xis'provided 'with a piston13hav'ing ja s "ring valve 14. f At the upper end olithecyl luder y of the air compressor, 12, is a springvalve 15, which actswith-the val-ve 1li-to openand- 'shut vconnection between fthe flow pressure l tank 26' and the highjpressure `tank17under theaction of the 'pi stonf13,-the compressed v'air passing thro `gli 555' in the ,gft-S1` gingr and ethfrouglfiypthirg whichl driving pow'eris imparted tothe vehicle.; 'll`hiscranku'shatt4 is preferably located in an oil' crank: case -A-Adjacent to the' enduit 165- which l1 9, shown, in detail in Figs.

7 and cylinders of any suitable f,

inders' epeeiae'euon emettere recent. Patented Apr. 22,1919.. appneeaeenea september eine. semaine.ateneo.v

olf' passing the air from the cylinder 13 'through-the casing 8 being to cool the cylinders of the ga's engine, the air being heated,

whereby the power is increased. Leading from the cylinder 17 is an out-take air pipe 4,r 5 and- 6,

(see Fig. 6), in which there is a leed valve 19 controlling the suppl of compressed air to the pneumatic cylinders 2. 'llhis valve 19, `shown in detail in Figs. 4, 5 and 6, is tapered in form and is provided with two ports to the four cylinders, the air passing `from the port 20 into the valve chamber and from the valve chamber `to the cylinder. @utside of the valve 19'is-a by pass `40, (see i Fig. 5), which -is'pened and closed by the cock 41, thel purpose lol? this by pass being to admit air directly to the cylinders to start the valve chamber `is the taperedl exhaust valve 21, which is provided with exhaust ports v22 which open alternately to the ex-A cock 23, having a port 23' which leads to theA atmosphere, and a secondport 24 which opens into the conduit 25 which opens into ports 20 which alternately serve as inlet 'lll - the engine should it be on a center. Parallel -with the valve 19 and similarly located in the low vpressure cylinder 26. Between the port 24 -and the conduit 26 isa spring valve `27, (see` Fig. 8),*which serves as a resistance to the exhaust, thereby acting as abrake to the motor -to control the movement ot the vehicle. Bearing against the spring 28 of the `valve 27 is a sliding block 29 adapted to be moved by the cam 30,'whereby the force ofthe spring 28 and the `resistance to the air-may be-increased or lessened. @n top of the V- air chamber .3 1 are intake puppet air valves 32. for supplying air to the cylinders, 2, when* connection between the cylinders andthe airtank by the valves 19 is closed. ."llhe power shaft 410i the pneumatic motor is connected with theshat 9.0i the 'gas-en gine by ineans of a clutch 33, whereby the gas-'engine' may be started byp'owpr from the pneumatie motor. g -'ll`l 1e valves i9 and 21 are operated'by the time gearing 34, which connects the valves. with the shaft 4 of the-motor. 'lFhe cocks "18,' and 23, .and the cam 30, maybe operated .by suitable levers, the connecting rodsof Which are yshown 537 in Fig. 7.

brokenaway at 3 5, 3 6 and t mi im n The operation is as follows: ln the motor as shown in Figure 1, the gas engine is started to pump air into the high pressure tank 17, the a1r being drawn in-to the `cylhas been compressed in the tank 17, the

three way cock 23 is turned to exhaust int-o the atmosphere, and the stop' cock 18 isA opened which permits the air to pass to the ,cylinders 2, and the shaftfl is driven, which drives thevehicle through the sprocket 5. desired to stop the vehicle, the gas engineis stopped and the stop cock 18 is closed, which shuts 0H" the passage of air from the tank 17. The three way cock -23 is then turned Vto cause the aifr which is pumped from the atmosphereby the cylinders 2 under the lmomentum of the vehicle to pass to the low pressure cylinder 26, and in case a quick stop is desired the cam is turned' to increase` the force of the spring'28 and the resistance to the passage of the air fromr the cylinders.

vehicle is partly stored in the tank -26 and is partly employed as `a brake, and this operation is the same where in descending a grade it is desirable to apply a brake without stopping the movement of Ithe vehicle.

ymotor forv driving the same,

` Thus the t' power incident to the vmomentum of the Under such conditions the pressure in the tanks 17 and 26 becomes equal.

- In certain cases, as Where my improvement is to be used as an auxiliary motor, theauxiliary motor or gas engine 8 may be dispensed with, the air compressor 12 being connected with the main motor of the vehicle, as will be readily understood byv those skilled inthe art.

The advantages of my invention should be understood from the foregoing description by those skilled in the art.

What I claim and desire to secure by Letters Patent is In a pneumaticl motor for vehicles, the combinationv of a cylinder and piston, devices for connecting the piston with the running gear of the vehicle, a low pressure air reservoir connected with the cylinder, an air compressor and an auxiliary a high pressure air reservoir lconnected with the cylinder and 'with the air compressor, a-connection between the cylinder and the low pressure reservoir, connections between the auxiliary air compressor and the low and high pressure air reservoirs, and devices for opening and closing the connections.

raamt A. sNYDisR.

Witnesses JAMES K. BAKEWELL, M. A. R. 

